I think this drama was very interesting. I had seen Kang Joon in other dramas, and it was interesting, playing his usual friendly self as a robot and a rude human. I think the show is fast-paced, which is good since it keeps you on your toes and really interested. It does get a bit slow in the end, because I felt the writers weren't sure on how to finish it off.
But, the effects are really good, and the main leads have a very nice and fun chemistry. I think it really does cause the viewer to wonder what their stance is about falling in love with a robot, but a beautiful robot like Kang Joon is. It changes your stance and views on whatever you think you can love. It's an interesting watch for romantic comedy fans and sci-fi fans.